package demo;

interface IAnimal {
    int a = 10;
    void test();

    public static final int b = 20;
    public abstract void test1();

    default public void test2() {
        System.out.println("嘻嘻");
    }
    public static void test3() {
        System.out.println("嘿嘿");
    }

}
class Dog implements IAnimal {
    @Override
    public void test() {

    }

    @Override
    public void test1() {

    }
}

public class Test {
    public static void main(String[] args) {
//        IAnimal iAnimal = new IAnimal();
    }
}
